Quantifying Efficiency Loss of Perovskite Solar Cells by a Modified Detailed Balance Model
| Autor: | Alex K.-Y. Jen, Francis Lin, Wei E. I. Sha, Hugh L. Zhu, Xingang Ren, Wallace C. H. Choy, Zishuai Wang, Hong Zhang |
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| Rok vydání: | 2018 |
| Předmět: |
Work (thermodynamics)
Materials science FOS: Physical sciences 02 engineering and technology Applied Physics (physics.app-ph) 010402 general chemistry 01 natural sciences General Materials Science Ohmic contact Perovskite (structure) Condensed Matter - Materials Science Renewable Energy Sustainability and the Environment business.industry Photovoltaic system Energy conversion efficiency Materials Science (cond-mat.mtrl-sci) Detailed balance Physics - Applied Physics 021001 nanoscience & nanotechnology 0104 chemical sciences Optoelectronics 0210 nano-technology Science technology and society business Physics - Optics Voltage Optics (physics.optics) |
| DOI: | 10.48550/arxiv.1801.02941 |
| Popis: | A modified detailed balance model is built to understand and quantify efficiency loss of perovskite solar cells. The modified model captures the light-absorption dependent short-circuit current, contact and transport-layer modified carrier transport, as well as recombination and photon-recycling influenced open-circuit voltage. Our theoretical and experimental results show that for experimentally optimized perovskite solar cells with the power conversion efficiency of 19%, optical loss of 25%, non-radiative recombination loss of 35%, and ohmic loss of 35% are the three dominant loss factors for approaching the 31% efficiency limit of perovskite solar cells. We also find that the optical loss will climb up to 40% for a thin-active-layer design. Moreover, a misconfigured transport layer will introduce above 15% of energy loss. Finally, the perovskite-interface induced surface recombination, ohmic loss, and current leakage should be further reduced to upgrade device efficiency and eliminate hysteresis effect. The work contributes to fundamental understanding of device physics of perovskite solar cells. The developed model offers a systematic design and analysis tool to photovoltaic science and technology. Comment: 21 pages, 9 figures, 3 tables |
| Databáze: | OpenAIRE |
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